On 2016-01-05 10.57, Dennis Kaarsemaker wrote:
> On di, 2016-01-05 at 09:47 +0100, Torsten Bögershausen wrote:
>> Need to drop
>> David Greene <gree...@obbligato.org>
>> from List, no MX record
> 
> seahawk:~$ dig MX obbligato.org
> obbligato.org.                1800    IN      MX      10
> mail.obbligato.org.
> seahawk:~$ dig mail.obbligato.org
> mail.obbligato.org.   1800    IN      CNAME   obbligato
> .org.
> obbligato.org.                1800    IN      A       173.255.19
> 9.253
> 
> So it has an MX record, it's just incorrect: MX records must not point
> to things that are CNAMEs.
> 
This may be a problem from web.de:

An error occurred while sending mail. The mail server responded:
Requested action not taken: mailbox unavailable
invalid DNS MX or A/AAAA resource record.
Please check the message recipient "gree...@obbligato.org" and try again.

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